Gas-heated water-heating apparatus



Nov. 13,123. 11,473,859

, H. J. MALADRY GAS HEATED WATER HEATING APPARATUS Filed Jan.l 18, 1922 2 Shams-Sheet 1 H. J. MALADRY GAS HEATED WATER HEATING APPARATUS Filed Jan. 18, 1922 2 Bheetsnshee, 2

Patented Nov. 13, 1923..

UNET@ SFAS arnr HENRI JULES ll/IALADRY, OF PARIS, FRANCE.

GAS-HEATED WATER-HEATING APPRTUS.

Application led January 18, 1522.

ToaZZ 107mm t may conce/m:

Be it known that l, HENRI JULES MALA DRY, a citizen of the French Republic, residring at Paris, France, have invented new and useful Improvements in Gas-Heated lNaten Heating Apparatus, or' which the following is a speciiication.

The present invention relates to a gasheated water-heating apparatus intended to heat water in suflicient quantity to supply the basin of a wash-stand, or to supply intermittently small quantities of water at a predetermined temperature.

The said apparatus comprises a vessel provided with an inlet for cold water at the lpressure of the main or at a lower pressure rand with a water outlet for either Vhot or `cold water at will. To this end, a special cock makes it possible either to allow the water to liow directly towards the outlet or to cause 'same to circulate within the vessel, where it is heated by a flame of gas pro\ vided in the lower portion of a central iue round which the water circulates in a well known manner.

rlhe water is heated to a predetermined maximum temperature by means of an automatic regulating device which is combined in such a way as to cut olif the-gas supply as soon as the temperature of the water rises above the normal (for instance o centigrade) and as to re-establish the gas supply as soon as the temperature becomes lower than normal.

in order that the invention may be readily understood, an embodiment of same is, by Vway of example only, illustrated by the accompanying drawings, in which:

Fig. 1 is a vertical section through a water heating apparatus according to the invention, the parts being in position to Vobtain cold water,

Fig. 2 is a detailed section showing the special three-way-cock which makes it possible to obtain either cold or hot water, the

parts being in position for the hot water Supply,

Fig. 3 is a vertical section at an enlarged scale of the automatic regulating device.

In the aforesaid drawings, 1 designates the body of the apparatus, which is preferably cylindrical and is provided with a central flue 2 in the base portion of which is located a burner 3 for blue flame gas, fitted on the end of the pipe 4. The latter has the regulating device 5 tted thereon and is con- Serial No. 530,153.

trolled by means of the cock 6, arranged below the outlet of the purifier 7.

Adjacent the burner 3 'or blue flame gas is located a small permanent burner 8 for lighting the gas of the burner 3 and of which the'supply pipe 9 is connected to the main gas pipe et at a point situated between the cock 6 and the regulating device 5.

1() designates the cock or valve controlling` the supply of water under pressure, the said cock or valve 10 being connected to the inner tube 11 which leads to the three-way-cock 12 which is in turn connected to one end of a curved tube 13 of which the other or free end delivers under a jet-breaker 14. The three-way-cock 12 is further connected to a vertical tube 15 of which the upper end is bent downwardly and delivers into a tube 16 which is connected to the outer outlet pipe 17. lt will be readilv understood that if the three-way-cock 12 is in the position shown in Fig. 1, the outlet-pipe 17 will deliver cold water passing by way of the tube 15 and the tube` 16. It on the contrary the cock 12 is rotated and set in the position indicated in Fig. 2, the cold water passes b v way of the tube 13 and goes thence towards the bottom of the apparatus, in the annular space existing between the outer casing 1 and the central flue 2. This water is thus heated by the contact of the flue and, being subjected to the pressure of the cold water, rises towards the top of the vessel 1, to be evacuated by way of the tube 16. The outer outlet-pipe 17 then delivers hot water.

The regulating device 5, arranged at the level of the jet breaker 14, automatically maintains thc water supplied by the heating apparatus at a predetermined maximum temperature, -for instance 65O centigrade. The said device comprises a thermostatic capsule 18 (Fig. 3) containing for instance methylated spirits, oit which the boiling point is about 66O centigrade. This capsule 18 acts in a well known manner on a dish-like member 19 slidably mounted in a suitable guide 2O and which operates a piston or plunger 21 which in turn operates an obturator or valve 22. The latter is subjected to the action of a spring 23 and is provided with a central guiding rod 22L which is able to slide in a corresponding recess of the casing 5. The gas is admitted by wav of the passage or port 5:l and leaves the regulating device by means of the passage or port 5b. The passage of the gas is thus allowed or cut olf according to the position of the obturator or valve 22. It WillV be readily understood that it the thermostatic capsule 18 is dilated by the heat when Ythe temperature rises above 'the predetermined maximum, it will push the dishlile member i9 and the valve Q2 which will then be applied on its seat and will thus eut oil the passage ot the gas by closing the admission port 5a. Uni)` the small burner 8 will then remain lit. The cold Water on ivf-)aching` the jet-breaker l-Lt exactly opposite the thermostatie capsule 19, instantaneously cools the latter which through its contraction allows the valve Q2 to open again under the influence of the springl 23 so as to permit the passage of the gas, which is lit again by the Contact of the small flame 'from the permanent burner S. The required temperature is therefor re-estabiished.I and the operation is repeated in the saine manner as often as required, owing` to the automatic operation of the regulating device 5, which thus controls the temperature of the Water delivered by the outer outlet pipe 17.

I claim:

In a thermostatic valve 'for gas-heated water-heating apparatus, the combination of: a valve easing (5), forming` an annular chamber and having` an admission port (51) and an exit port (5b) for the zg'as; a eupshaped valve (22) havingl a central stem (22a), mounted Within said casing` and adapted to control the passage oi Vthe gas therethrough from the admission port towards the exit-port; a guiding' sleeve ior said central stem, inte al with said easing; a coil-spring' arraiigffei'l in the aforesaid cup-shaped "mln-land normally tendini; to keep same away ir in its seat; i, stationary eup-shapeifl g-uide-nieniber '(20) Vmounted laterally in the Wall o't the valve-casing' coaxially and bacl to back With the eupshaped valve and havingv an integral central sleeve; a piston (21) extendingy within the last-named sleeve and havingVr one end in operative contact With said cup-shaped valve; a flanged dish-like member (I9) slidably mounted in the aforesaid stationary guide-member and in operative Contact with the other end ot said piston; and a thermostatic capsule expansible by heat (i8), having` one tace in operative Contact with the said dish-like member; substantiallyv as described.

In testimony whereof I signed hereunto my name in the presence or tivo subscribing; Witnesses:

HENRI JULES MALADRY. Witnesses ZLoN FLUGGCHAERT, PRAN. EGTON. 

